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Shiraz Sohail

You provide the schmatic diagram of your sensor. How it is connected in the circuit with component values.

Renjun Liu

@ Shiraz Sohail

Thank you.

The schematic diagram is shown like this.

When C connects A, D connects B, then I get output signal from oscilloscope by pressing the device.

However, when C connects B, D connects A, there is no signal.